• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2005년도 추계종합학술대회
• /
• pp.71-74
• /
• 2005

본 논문은 종래에 코인투입구에 동전, 지폐 등의 현금을 사용하여 상거래 활동에 사용되고 있는 기기장치의 코인/지폐 인식부를 리더/라이터 RF ID단말장치로 대체하므로 기기장치의 생산단가를 낮출 수 있다. 매장운영에 있어 기존 사용되는 코인기가 장착된 기기장치의 가장 불편하게 여겨졌던 동전의 계산, 노동력, 시간 경비 등을 낮출 수 있으므로 매장운영 관리하는데 있어서 보다 효율적으로 운영하는 효과가 발생하게 되었다. 매장에 방문하는 고객을 회원으로 유치할 수 있는 Mobile Barcode System을 연동하여 종전 고객을 기다리는 것이 아니라 매장에서 고객을 유치할 수 있는 고객 마케팅, 매장운영 시스템을 제안한다.

• 한국통신학회논문지
• /
• 제37권5C호
• /
• pp.393-402
• /
• 2012

본 논문에서는 PPG(Photoplethysmography)센서를 통하여 검출되는 심장박동신호를 이용하여 스트레스 여부를 판단하고, 이를 위한 효과적인 신호처리를 연구한다. 측정되는 PPG신호를 바탕으로 PPI(Pulse to Pulse Interval)와 이산 신호처리 방법을 이용하여 감성자극을 판단한다. 감성자극에 대한 반응을 실험하기 위하여 피실험자들은 스트레스영상과 안정영상을 TV를 통하여 시청하였다. 스트레스 정도에 따라 다양한 신체반응이 나타나며, 그 중 가장 큰 변화를 나타내는 심장박동수의 변화를 PPG센서를 이용하여 검출한다. 그러나 측정에 의한 오차와 피실험자의 동작에 의한 오차가 발생한다. 본 논문에서는 감성자극 판단에 오차를 유발하는 신호잡음과 동작잡음을 제거하기 위한 방안을 제안한다. PPG센서를 통하여 검출된 심장박동신호에 섞여있는 고주파대역의 신호잡음을 제거하기 위하여 전처리에서 스펙트로그램을 이용한 에너지밀도 분석법으로 피실험자에 적응된 해밍 필터를 적용한다. PPG센서와 피실험자간의 접촉상태 때문에 발생되는 동작잡음으로 인하여 발생될 수 있는 스트레스 검출오차를 수정하기 위하여 후처리에서 히스테리시스를 적용한다. 실험결과 심장박동의 특성을 고려하지 않은 방안에 비하여 신호잡음을 효과적으로 줄였으며, 동작잡음에 의한 검출오차를 개선하였다.

• Korean Journal of Acupuncture
• /
• 제26권4호
• /
• pp.119-133
• /
• 2009

Objectives : The object of this study is to report on the theory of Ohaeng-Hwa Acupuncture Therapy. Methods : The theory of Ohaeng-Hwa Acupuncture Therapy(OHAT; 五行和針法) is a part of the Five Elements Theory unique to Korea. This research Classic of Difficulty Issues-Nan Jing review Ohaeng-Hwa Acupuncture Therapy. Results : OHAT, created and developed by Jae-hoon Song, integrates the victor-vanquished as well as the son-mother relationship of the Five Elements of breakdown and restoration of balance between yin and yang. And also, it provides resources and data on The seventy fifth Nan(75難), The sixty ninth Nan(69難) of Classic of Difficulty Issues - Nan Jin 75, 69. OHAT establishes objectiveness and accuracy of diagnosis based upon the traditional method and procedure of pulse taking. In OHAT, a person's state of illness is diagnosed by applying the comparative examination of the palpitation of the pulse. It is the fact that the pulse varies according to the state, and that OHAT treatment has proven the positive results by using the victor-vanquished relationship on The Nan Jin 75. On the basis of this, it is necessary to add the sixty ninth Nan(69難), to research the theory of the generation of the Five Element. Conclusions : Ohaeng-Hwa Acupuncture is very effective in treating the wide range of illness, and thus it has gained an increasing attention of many scholars and practitioners in the field of traditional Korean oriental medicine. However, it is the first theoretical attempt to the clinical research and scientific methodology of Ohaeng(Five) Ohaeng-Hwa Acupuncture, and more active Ohaeng-Hwa Acupuncture R&D is being conducted nationwide.

• 대한예방한의학회지
• /
• 제6권1호
• /
• pp.51-95
• /
• 2002

1. As a point at issue of occidental medicine examination, followings have been indicated, 1) Occidental medical examination is performed by mainly test and instrument and therefore, role of doctors could be excluded and it could be diagnosed only for target disease and 2) in Korea, it could not be conducted in public medical system and therefore improvement effect of public health promotion could not be made due to increase of total medical expenses and infirmity of post management. These points are substantial limit of paradigm resided in occidental medicine and also problem caused by unique characteristics of medical system of Korea. In Korea, result of occidental medical examination show increased health risk from aged thirties and major diagnosed diseases are circulatory disease or chronic disease such as hepatic, hyperlipemic, hypertensional disease and diabetes, etc. Accounting that those chronic disease make a role as major public health risk, it is difficult that medical examination by only occidental medicine make effect on public health promotion. 2. Characteristics of oriental medicine examination could be summarized as diagnosis (information acquisition based on the facts) and demonstration (speculation based on acquired information) and in addition, quadruple diagnosis, as a medical examination method, include test as well as basic examination. Accounting on oriental medical examination, principally it is performed by independent herbalist and therefore, herbalist could acquire systemic result during first medical examination. Based on the theory of inner-outer examination, oriental medical examination has a principle of universe theory, systemic analysis of quadruple diagnosis, demonstration & reasoning. In addition, root of oriental medical examination could be found in pre-disease theory, a principal theory of oriental medicine. Pre-disease service could prove the advantage of oriental medicine in medical examination activities and therefore, it is needed that content of oriental medical examination should be actualized in current medical system. 3. In this study, oriental medical examination program, comprised of pulse-diagnosis, contrast muscular taking and medical consultation of herbalist is progressed communally with occidental medical examination. As pre-examination, questionary was given of general characteristics, health promoting life style, physical constitution and subjective symptom of musculoskeletal system. In addition, post-examination notification was given to subjects about health promoting control, physical constitution regimen and management of musculoskeletal system. During this study program, verification was conducted for input of acquired information and difference of each information after analysis and in addition, performed was analysis of factor influencing health promoting life style and musculoskeletal subjective symptom and evaluation of relationship of physical constitution and health promoting life study. In addition, it was verified of difference between musculoskeletal subjective symptom and result of muscle contrast picture evaluation. 4. Evaluation of oriental medical examination model is divided into 2 categories of oriental medical examination-consultation and result evaluation -post management. Oriental medical examination-consultation demands establishment of examination system, standardization of examination and establishment of examination form and in addition, it should be admitted as enlarged examination assists systemic quadruple diagnosis of herbalist not a key of oriental medical examination. In addition, information acquisition for research purpose should be performed according to the systemic research plan based on the separation of questionary for examination purpose and research purpose. For evaluation of the result, it was concluded that needed are result evaluation meets oriental medical system and post-notification system, informing health management information, based on examination result. 5. Accounting on satisfaction for oriental medical examination model, affirmative reply was much higher (66%) than negative (8.64%). Satisfaction of each area was in order of consultation of herbalist, systemic muscle contrast taking, pulse examination, post-notification and questionary fill-up and dissatisfaction was in order of post-notification, questionary fill-up, consultation of herbalist, systemic muscle contrast taking and pulse measurement. Satisfaction for collaborative examination of occidental and oriental medicine was over 60% and over 75% hope oriental examination would be included in later medical examination program. Based on this result, collaborative examination including occidental and oriental medicine could increase satisfaction of subjects for medical examination program.

• 한국전자파학회논문지
• /
• 제17권7호
• /
• pp.684-693
• /
• 2006

이 논문에서는 광대역 펄스 전자파에 노출된 인체 두부를 생체 조직의 분산 특성을 고려하여 SA (Specific Absorption) 분포를 해석하였다. 생체 조직의 분산 특성은 4 차 Cole-Cole 모델로 특성지어지는 데, 현재 4 차 Cole-Cole 모델을 FDTD에 정확히 적용시킬 수 있는 분산 알고리즘이 없다. 따라서 본 논문에서는 FDTD 알고리즘에 적용 가능한 생체 조직의 분산 특성을 l 차 Cole-Cole 모텔과 3 차 Debye 모델을 적용한 FDTD 분산 알고리즘을 이용하여 SA를 해석하였다. 각 모델의 타당성을 먼저 조사한 후, 조직의 분산이 SA 분포에 미치는 영향을 연구하였다.

• 대한한의학원전학회지
• /
• 제24권1호
• /
• pp.57-71
• /
• 2011

Although there have been many endeavors aimed at the standardization and globalization of Korean medicine over a long period of time, the access to information on Oriental medical classics has been relatively poor due to the lack of appropriate translation methodology and standard terminology. In order to overcome existing barriers, continuous effort towards precise translation adopting a standard terminology should be maintained. As a part of this procedure, we planned to publish a part of "Classic of difficult issues(難經)" in three sections, and the first two studies have already been published. Based on the methodology and approaches of previous studies, this third study aims to translate parts of "Classic of difficult issues(難經)" into English, beginning with "The Sixteenth Question", and adopting "WHO-IST" terminology. The outcomes of this study are presented as follows: First, based on the result of existing translation studies and the outcome of "WHO-IST", English translation of "Classic of difficult issues(難經)" from "the Sixteenth Question" to "The Twenty-second Question" is offered, hoping to set a model of translation study which can be communicated universally. Second, in order to pave the way for future success in establishing translation studies, it is natural to verify the effectiveness and practicality of standard terminologies including the outcome of "WHO-IST". Continuous translation studies will be required in order to obtain constant feedback and adopt more suitable guidelines during the standardization process. Taking this into consideration, further translation studies of Oriental medical classics including "Classic of difficult issues(難經)" should be continued.

• 정보와 통신
• /
• 제11권2호
• /
• pp.77-89
• /
• 1994

지난 20여년간 광섬유전송방식의 고속화는 괄목할만한 성장을 이룩했다. 최근에는 어븀첨가광섬유증폭기의 개발로 인하여 10Gb/s의 초고속 광기간통신전송방식도 실용화를 앞두고 있다. 한편, 가입자에게도 광섬유가 포설되어 화상을 주체로 한 서비스가 제공되는 향후의 B-SIDN망에서는 전송로는 물론 노드까지도 초고속의 신호전송 처리가 필수이다. 그러나, 전기적인 처리를 기반으로 한 종래의 전송 처리기술로는 속도의 한계에 도달할 가능성이 많아서 이를 대체 할 수 있는 광소자개발 및 새로운 기술구축이 요구된다. 또한, 광솔리톤은 광섬유의 분산에 의해서 광펄스폭이 널어지지 않고 안정적으로 광섬유를 전파해가는 성질을 충분히 잘 활용한 기술로써 장거리 통신기술로 적합하게 개발되었다. 이와 같은 배경으로부터 본고에서는 차세대기간통신을 위한 초고속 초장거리 광전송기술 즉, 향후에 Tb/s 전송의 주역이 될 광주파수 다중기술 및 무중계 장거리 전송이 가능한 광솔리톤기술의 연구현황을 살펴보고 기술적인 문제점 해결을 위한 향후의 연구동향을 소개한다.

• 한국공작기계학회논문집
• /
• 제11권6호
• /
• pp.75-82
• /
• 2002

Design for a quiet operation of fluid power system requires the understanding of noise and vibration characteristics of the system. It's not easy to analyze noise problem in hydraulic cylinder used in typical actuator Because they've got complex fluid dynamics. One of the fundamental problems associated with the hydraulic system is the pulsating flow in pipe lines, which can be tackled by the analysis under simplifying assumptions. The present study focuses on theoretic analysis and experimental study on the dynamics of laminar pulsating flow in a circular pipe. We analyze the propagation characteristics of the pressure pulse within a hydraulic pipe line taking into account the pulsating flow frequency variation. We also measure instantaneous pressure pulses within pipe line to identify the transfer functions. We conduct series of experiments to investigate the propagation characteristics of pressure pulse for various pressure of pulsating flow. The working fluid of the present study is ISO VG46 and the temperature ranges from 20 to $60^{\circ}$ with normal pressure at 4000kPa. The flow rate is measured by using an ultrasonic flow meter. Pressures at fixed upstream and downstream positions are measured concurrently. The electric signals of the pressure sensor are stored and analyzed using a system analyzer(PKE 983 series). The frequency is varied in the range of 10~500Hz. The Reynolds number is kept below 2,000. In the present study, boundary condition was varied by installing a surge tank and an orifice at the end of pipe. Experimental and theoretical results were compared each other under various boundary conditions.

• Journal of Radiation Protection and Research
• /
• 제42권1호
• /
• pp.48-55
• /
• 2017

Background: Simultaneous detection of neutrons and gamma rays have become much more practicable, by taking advantage of good gamma-ray discrimination properties using pulse shape discrimination (PSD) technique. Recently, we introduced a commercial CLYC system in Korea, and performed an initial characterization and simulation studies for the CLYC detector system to provide references for the future implementation of the dual-mode scintillator system in various studies and applications. Materials and Methods: We evaluated a CLYC detector with 95% $^6Li$ enrichment using various gamma-ray sources and a $^{252}Cf$ neutron source, with validation of our Monte Carlo simulation results via measurement experiments. Absolute full-energy peak efficiency values were calculated for gamma-ray sources and neutron source using MCNP6 and compared with measurement experiments of the calibration sources. In addition, behavioral characteristics of neutrons were validated by comparing simulations and experiments on neutron moderation with various polyethylene (PE) moderator thicknesses. Results and Discussion: Both results showed good agreements in overall characteristics of the gamma and neutron detection efficiencies, with consistent ~20% discrepancy. Furthermore, moderation of neutrons emitted from $^{252}Cf$ showed similarities between the simulation and the experiment, in terms of their relative ratios depending on the thickness of the PE moderator. Conclusion: A CLYC detector system was characterized for its energy resolution and detection efficiency, and Monte Carlo simulations on the detector system was validated experimentally. Validation of the simulation results in overall trend of the CLYC detector behavior will provide the fundamental basis and validity of follow-up Monte Carlo simulation studies for the development of our dual-particle imager using a rotational modulation collimator.

• 한방재활의학과학회지
• /
• 제33권4호
• /
• pp.167-184
• /
• 2023

Objectives This study was designed to assess the effectiveness of ultrasound therapy at the ST11 for regulation of sympathetic hyperactivity. Methods Forty healthy adult subjects were assigned to experimental group and control group. After taking mental stress, ultrasound therapy was applied at the ST11 in experimental group and sham-ultrasound therapy was applied in control group. The evaluation of sympathetic activity was measured by blood pressure, pulse rate, and heart rate variability at 3 times (Time 1: before the stress stimulation, Time 2: after the stress stimulation, Time 3: after the intervention). The primary end point was consisted of normalized (norm) low frequency (LF)/high frequency (HF) ratio, LF (norm), HF (norm). The secondary end point was consisted of systolic blood pressure, diastolic blood pressure, pulse rate, mean heart rate, standard deviation of NN intervals, root mean square of the successive differences, total power (log). Results After the stress stimulation, all subjects showed sympathetic hyperactivity. After the intervention, the experimental group showed lower sympathetic activity than the control group. Comparing the Time 3 and Time 1, the experimental group showed no significantly differences in sympathetic activity while the control group showed higher sympathetic activity in Time 3 than Time 1. Comparing the Time 3 and Time 2, the experimental group showed lower sympathetic activity in Time 3 than Time 2 while the control group showed higher sympathetic activity in Time 3 than Time 2. Conclusions We suggest that the ultrasound therapy at ST11 can decrease sympathetic activity in sympathetic hyperactivity condition.